Let's divide 515513 by 31
Let's see how many times 31 fits into 515513.

Advancing to step 1:
The number 31 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 31

Going ahead to step 2:
31 can be fit into 51 1 times, resulting in a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 31 from 51, we get 20.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 31

Advancing to step 3:
31 goes into 205 6 times with a remainder of 19.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Subtracting 186 from 205 leaves us with 19.
Bring next digit (5) of the dividend behind the 19 and repeat the process: 195 / 31

Advancing to step 4:
If we divide 195 by 31, we get 6 and a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 166.0
If we subtract 186 from 195, we get 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 31

Advancing to step 5:
If we divide 91 by 31, we get 2 and a remainder of 29.
Record the quotient 2 as the next digit in the result. 
Result so far: 1662.0
If we take 62 away from 91, we end up with 29.
Bring next digit (3) of the dividend behind the 29 and repeat the process: 293 / 31

Advancing to step 6:
31 goes into 293 9 times with a remainder of 14.
Record the quotient 9 as the next digit in the result. 
Result so far: 16629.0
Deduct 279 from 293 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 7:
If we divide 140 by 31, we get 4 and a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 16629.4
If we subtract 124 from 140, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 8:
If we divide 160 by 31, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 16629.45
The remainder is 5 after subtracting 155 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 9:
31 goes into 50 1 times with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 16629.451
The remainder is 19 after subtracting 31 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 10:
190 divided by 31 is 6 with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 16629.4516
If we take 186 away from 190, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 11:
If we divide 40 by 31, we get 1 and a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 16629.45161
If we subtract 31 from 40, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 12:
31 goes into 90 2 times with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 16629.451612
Subtracting 62 from 90 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 13:
280 divided by 31 is 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 16629.4516129
If we take 279 away from 280, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 14:
31 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 16629.4516129
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 16629.4516129 and a remainder of 1e-08.